Several post-Soviet states are particularly vulnerable to the effects of climate change. Furthermore, two of the worst environmental disasters of our times – the Chernobyl nuclear accident and the Aral Sea desertification – happened in the post-Soviet region, with implications that have crossed state and time boundaries. This dossier highlights the major environmental and climate-change-related crises affecting the area and the diverse national and regional approaches to tackle them. What is the approach of Russia — one the biggest energy producers and polluters in the world — with regards to climate change? Can transboundary crises spur regional cooperation in the South Caucasus and Central Asia? What is the role of civil society in holding governments accountable in this domain?